AlPt
AlPt is a stable, metallic intermetallic alloy composed of aluminum and platinum that is primarily utilized in catalytic research and materials science.
About AlPt
AlPt is a metallic intermetallic compound belonging to the platinum-group alloy catalyst family. As a thermodynamically stable phase located on the convex hull, it represents a robust structural configuration that is highly favored in solid-state chemistry. Its metallic nature suggests excellent electrical conductivity, making it a subject of significant interest for catalytic applications where charge transfer is essential.
With extensive documentation across multiple structural databases, this compound is a well-characterized member of its class. Its stability and predictable structural behavior make it a reliable candidate for researchers investigating the synergy between aluminum and platinum in catalytic environments, particularly where structural integrity under reaction conditions is paramount.
Key Properties
Cross-validated computational properties for AlPt, aggregated across 5 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of AlPt. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for AlPt, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P213 (No. 198) | cubic | 0.00 | 0.0000 | -30.241 | 12.70 |
| — | — | 0.00 | 0.0000 | -1.048 | — |
| P213 (No. 198) | cubic | 0.00 | 0.0000 | -1.052 | — |
| — | — | 0.00 | 0.0187 | -1.030 | — |
| Pm-3m (No. 221) | cubic | 0.00 | 0.1107 | -30.130 | 12.48 |
| — | — | 0.00 | 0.1115 | -0.937 | — |
| — | — | 0.00 | 0.1136 | -0.935 | — |
| — | — | 0.00 | 0.1176 | -0.931 | — |
| Pm-3m (No. 221) | cubic | 0.00 | 0.1227 | -0.929 | — |
| — | — | 0.00 | 0.2379 | -0.810 | — |
| — | — | 0.00 | 0.2551 | -0.793 | — |
| — | — | 0.00 | 0.4269 | -0.621 | — |
Applications
Where AlPt is used.
Frequently Asked Questions
Common questions about AlPt, answered from cross-validated data.
What is AlPt?
AlPt is a stable, metallic intermetallic alloy composed of aluminum and platinum that is primarily utilized in catalytic research and materials science.
What is AlPt used for?
What is the band gap of AlPt?
Is AlPt a metal, semiconductor, or insulator?
Is AlPt thermodynamically stable?
What is the crystal structure of AlPt?
What is the density of AlPt?
How many polymorphs of AlPt are known?
What elements does AlPt contain?
Where does the data for AlPt come from?
How It Compares
Within the platinum-group alloy catalysts class.
Unlike more complex or volatile members of the platinum-group alloy class such as As2Pt or IrSe2, AlPt stands out for its straightforward binary stoichiometry and high thermodynamic stability. While compounds like Ga2Ru or GeRu often exhibit diverse coordination environments, AlPt maintains a consistent structural profile that serves as a benchmark for simpler metallic alloys within this diverse group.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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